Compléter les phrases suivantes.
Charles Darwin was a naturalistphysicistalchemist
: he studied natural sciences.
He answered the question of the appearanceoriginsize
His theory also concerns the appearanceevolutionage
He changed the way people saw electricityliving speciesastronomy
He thought that all living species, men included, had the same descendantancestorgene
He also called natural fightnatural selectionnatural strength
the fact that only the strongest survive.
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